Damp-proof relay protection wiring and distributing box

Abstract

The utility model provides a moisture-proof relay protection wiring junction box, which relates to the technical field of junction boxes, and comprises a box body, a wiring seat fixedly arranged in the box body, a plurality of threading holes arranged on the side wall of the box body, locking assemblies arranged at the threading holes, a plurality of pairs of sealing plates arranged on the inner wall of the box body in a sliding manner, and a connecting sleeve sleeved on a wire, the connecting sleeve is provided with an abutting inclined circumferential surface and an annular groove, a trapezoidal sliding disc is installed in the annular groove in a sliding mode, the outer circumferential surface of the trapezoidal sliding disc is provided with a reset inclined circumferential surface, and the connecting sleeve is provided with a rubber sealing sleeve matched with the outer circumferential surface of an electric wire. And in cooperation with the connecting sleeve, the sealing connection between the electric wire and the box body is realized.

Description

Technical Field

[0001] This utility model relates to the field of junction box technology, and in particular to a moisture-proof relay protection junction box. Background Technology

[0002] In relay protection circuits, junction boxes are commonly used for wiring and branching operations. Existing junction boxes have several through holes on the box body, with connectors at the through holes. The connectors have clamping plates and nuts threaded onto them. Through the cooperation of the clamping plates and nuts, the wires are fixed to the box body and sealed to prevent moisture. However, in actual use, some through holes are not filled with wires, allowing the inside of the box to communicate with the outside through the through holes. This prevents the box from being sealed and prevents moisture, which can lead to short circuits and pose a safety hazard.

[0003] Therefore, a moisture-proof relay protection junction box is needed to solve the above problems. Utility Model Content

[0004] This utility model proposes a moisture-proof relay protection junction box. By setting a sealing plate, the wire hole is sealed, which improves the moisture-proof performance of the box. With the help of the connecting sleeve, the wire and the box are sealed together.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A moisture-proof relay protection junction box includes a box body with a cover on top. A terminal block is fixedly installed inside the box body. Several wire holes are provided on the side wall of the box body. Several pairs of sealing plates for sealing the wire holes are slidably installed on the inner wall of the box body. A locking component is provided at each wire hole. The box body also includes a connecting sleeve fitted onto the wire. One end of the connecting sleeve has a top inclined surface for pushing two corresponding sealing plates to the sides. The outer circumference of the connecting sleeve has an annular groove for limiting the pushed-open sealing plates. A trapezoidal sliding plate is slidably installed in the annular groove. The outer circumference of the trapezoidal sliding plate has a reset inclined surface. The inclination directions of the top inclined surface and the reset inclined surface are opposite. The other end of the connecting sleeve has a rubber sealing sleeve adapted to the outer circumference of the wire.

[0007] As a preferred technical solution, each of the locking components includes a locking sleeve fixedly installed in the corresponding wire hole. The free end of the locking sleeve extends outward from the box and is provided with several clamping pieces. A locking nut is threaded onto the locking sleeve.

[0008] As a preferred technical solution, the inner wall of the box is provided with several pairs of guide grooves. Each pair of guide grooves is symmetrically arranged on both sides of the corresponding wire hole. Each sealing plate is slidably installed in the corresponding guide groove. A horizontally arranged guide post is fixedly installed at the end of each sealing plate away from the corresponding wire hole. The free end of each guide post passes through the corresponding guide groove. A compression spring is sleeved on each guide post. Each compression spring abuts against the corresponding sealing plate and the corresponding guide groove.

[0009] As a preferred technical solution, each of the sealing plates has a guide slope on both sides of adjacent ends.

[0010] As a preferred technical solution, the cover is installed on the box body by bolts.

[0011] By adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0012] Because the moisture-proof relay protection junction box includes a sealing plate, the sealing plate allows the wiring holes to be sealed when no wires are installed, maintaining a sealed environment inside the box. This gives the junction box a moisture-proof function and reduces short circuits caused by moisture entering the junction box.

[0013] Because the moisture-proof relay protection junction box includes a connecting sleeve, the end of the wire is inserted into the connecting sleeve, and the end of the connecting sleeve with the top inclined surface extends into the corresponding locking sleeve. The top inclined surface cooperates with the guide inclined surface to push the two sealing plates open to both sides. As the connecting sleeve continues to move into the box, the two sealing plates move into the annular groove. The locking nut is rotated to lock the connecting sleeve with the clamping plate. The wire can then be passed out of the connecting sleeve and connected to the terminal block. In this utility model, the top inclined surface pushes the two sealing plates open to both sides, allowing the connecting sleeve to extend into the box. The locking of the connecting sleeve is achieved through the cooperation of the annular groove, the clamping plate, and the locking nut.

[0014] When the wire needs to be removed, turn the locking nut to unlock the connecting sleeve and push the connecting sleeve into the box. Under the push of the trapezoidal sliding plate, the two sealing plates continue to move to both sides until the trapezoidal sliding plate moves to the inside of the two sealing plates. The connecting sleeve can then be pulled out. After the connecting sleeve is pulled out of the locking sleeve, the two sealing plates return to their original position under the action of the compression spring, automatically sealing the wire hole and keeping the box sealed and moisture-proof.

[0015] Because the connecting sleeve is equipped with a rubber sealing sleeve, the elasticity of the rubber sealing sleeve itself allows it to fit tightly against the outer surface of the wire, improving the sealing performance between the wire and the connecting sleeve, reducing the entry of external dust and rainwater into the box, and improving the box's moisture resistance. Existing junction boxes fix the wire by squeezing it with clamping plates, which can easily damage the wire insulation layer. This invention avoids excessive squeezing of the wire by adapting the elasticity of the sealing element to the outer surface of the wire.

[0016] Because the moisture-proof relay protection junction box includes a sealing plate, under the push of the compression spring and the guidance of the guide groove and guide post, the adjacent ends of each pair of sealing plates abut together and block and seal the corresponding wire holes, so that the wire holes can be automatically sealed when no wires are installed. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0020] Figure 3 for Figure 1 Cross-sectional view along the middle BB direction;

[0021] Figure 4 This is a schematic diagram of the connecting sleeve.

[0022] Figure 5 This is a reference diagram showing the state of the trapezoidal sliding disk when it is located inside the sealing plate.

[0023] The components are: 1. Box body; 2. Cover body; 3. Terminal block; 4. Wire hole; 5. Sealing plate; 6. Locking sleeve; 7. Clamping plate; 8. Locking nut; 9. Wire; 10. Connecting sleeve; 11. Top inclined surface; 12. Annular groove; 13. Trapezoidal sliding plate; 14. Reset inclined surface; 15. Rubber sealing sleeve; 16. Guide groove; 17. Guide post; 18. Compression spring; 19. Guide inclined surface; 20. Bolt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1-5 As shown, the moisture-proof relay protection junction box includes a box body 1, a cover 2 installed on the top of the box body 1, a terminal block 3 fixedly installed inside the box body 1, several wire holes 4 provided on the side wall of the box body 1, several pairs of sealing plates 5 for sealing the wire holes 4 are slidably installed on the inner wall of the box body 1 along the horizontal direction, and a locking component is provided at each wire hole 4. It also includes a connecting sleeve 10 sleeved on the wire 9. One end of the connecting sleeve 10 is provided with a top inclined surface 11 for pushing the corresponding two sealing plates 5 to both sides. The outer circumference of the connecting sleeve 10 is provided with an annular groove 12 for limiting the pushed-open sealing plates 5. A trapezoidal sliding plate 13 is slidably installed in the annular groove 12. The outer circumference of the trapezoidal sliding plate 13 is provided with a reset inclined surface 14. The inclined directions of the top inclined surface 11 and the reset inclined surface 14 are opposite. The other end of the connecting sleeve 10 is provided with a rubber sealing sleeve 15 adapted to the outer circumference of the wire 9.

[0026] Each locking assembly includes a locking sleeve 6 fixedly installed in the corresponding wire hole 4. The free end of the locking sleeve 6 extends outward from the box 1 and is provided with several clamping pieces 7. A locking nut 8 is threaded onto the locking sleeve 6.

[0027] The inner wall of the box 1 is provided with several pairs of guide grooves 16. Each pair of guide grooves 16 is symmetrically arranged on both sides of the corresponding wire hole 4. Each sealing plate 5 is slidably installed in the corresponding guide groove 16. A horizontally arranged guide post 17 is fixedly installed at the end of each sealing plate 5 away from the corresponding wire hole 4. The free end of each guide post 17 passes through the corresponding guide groove 16. A compression spring 18 is sleeved on each guide post 17. Each compression spring 18 abuts against the corresponding sealing plate 5 and the corresponding guide groove 16.

[0028] Each sealing plate 5 has a guide slope 19 on both sides of its adjacent ends.

[0029] The cover 2 is installed on the box 1 by bolts 20.

[0030] The method of using this utility model is as follows:

[0031] First, when it is necessary to install the wire 9 onto the terminal block 3, thread the wire 9 through the connecting sleeve 10, insert the connecting sleeve 10 into the locking sleeve 6, and press it against the inclined surface 11 against the guide inclined surface 19 on the outside of the sealing plate 5. Then, push the two sealing plates 5 to move to both sides until the sealing plates 5 are located in the annular groove 12 and stop. At this time, the trapezoidal sliding plate 13 is located outside the sealing plate 5, as shown. Figure 1 As shown, by rotating the locking nut 8, the clamping plate 7 clamps and locks the connecting sleeve 10, and the wire 9 extends out from the connecting sleeve 10 and connects to the terminal block 3, thus completing the installation of the wire 9.

[0032] The second step is to disconnect wire 9 from terminal block 3, turn locking nut 8 to unlock connecting sleeve 10, and push connecting sleeve 10 into housing 1 until trapezoidal sliding plate 13 moves to the inside of sealing plate 5. Figure 5 As shown, the connecting sleeve 10 is then moved to the outside of the box 1. After the sealing plate 5 is pushed by the reset inclined surface 14 and the top inclined surface 11, the connecting sleeve 10 is pulled out from the locking sleeve 6, thus completing the removal of the wire 9.

[0033] In summary, this utility model achieves the sealing of the wire hole by setting the sealing plate, which improves the moisture-proof performance of the box. With the help of the connecting sleeve, it achieves a sealed connection between the wire and the box.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A moisture-proof relay protection junction box, comprising a box body, a cover installed on the top of the box body, and a terminal block fixedly installed inside the box body, characterized in that, The box body has several wire holes on its side wall. Several pairs of sealing plates for sealing the wire holes are slidably installed on the inner wall of the box body. Each wire hole is provided with a locking component. The box body also includes a connecting sleeve fitted onto the wire. One end of the connecting sleeve is provided with a top inclined surface for pushing the corresponding two sealing plates to both sides. The outer circumference of the connecting sleeve is provided with an annular groove for limiting the pushed-open sealing plates. A trapezoidal sliding plate is slidably installed in the annular groove. The outer circumference of the trapezoidal sliding plate is provided with a reset inclined surface. The inclination directions of the top inclined surface and the reset inclined surface are opposite. The other end of the connecting sleeve is provided with a rubber sealing sleeve that is adapted to the outer circumference of the wire.

2. The moisture-proof relay protection junction box according to claim 1, characterized in that, Each of the locking components includes a locking sleeve fixedly installed in the corresponding wire hole. The free end of the locking sleeve extends outward from the box and is provided with several clamping pieces. A locking nut is threaded onto the locking sleeve.

3. The moisture-proof relay protection junction box according to claim 1, characterized in that, The inner wall of the box is provided with several pairs of guide grooves. Each pair of guide grooves is symmetrically arranged on both sides of the corresponding wire hole. Each sealing plate is slidably installed in the corresponding guide groove. A horizontally arranged guide post is fixedly installed at the end of each sealing plate away from the corresponding wire hole. The free end of each guide post passes through the corresponding guide groove. A compression spring is sleeved on each guide post. Each compression spring abuts against the corresponding sealing plate and the corresponding guide groove.

4. The moisture-proof relay protection junction box according to claim 3, characterized in that, Each of the sealing plates has a guide slope on both sides of adjacent ends.

5. The moisture-proof relay protection junction box according to claim 1, characterized in that, The cover is bolted to the box.

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